Dmaxallitech,
I didn't get the XM option when I bought my 03 2500 HD LT. What is the difference between the XM and Non-XM factory stereos? Can it be added after purchase, to the factory stereo? I'd like the factory installation rather than an add on kit. If I have to go with the add on kit like a SKy-Fi can it be hooked into the factory Onstar antenna? Thanks in advance!
I didn't get the XM option when I bought my 03 2500 HD LT. What is the difference between the XM and Non-XM factory stereos? Can it be added after purchase, to the factory stereo? I'd like the factory installation rather than an add on kit. If I have to go with the add on kit like a SKy-Fi can it be hooked into the factory Onstar antenna? Thanks in advance!